<?php
abstract class Database
{
	protected $DF;

	function __construct ( $DF )
	{
		$this->DF = $DF;
		
		$this->Open();
	}

	abstract function Open ( );
	abstract function Err ( );
	abstract function Errno ( );
	abstract function Query ( $_0 );
	abstract function InsertId ( );
	abstract function NumRows ( $_0 );
	abstract function FetchAssoc ( $_0 );
	abstract function FetchAssocRows ( $_0 );
}
?>